APA (7th ed.) Citation

DIRAC, P. A. M. (1958). Principles of quantum mechanics (4th ed.). O.U.P..

Chicago Style (17th ed.) Citation

DIRAC, P. A. M. Principles of Quantum Mechanics. 4th ed. London: O.U.P., 1958.

MLA (9th ed.) Citation

DIRAC, P. A. M. Principles of Quantum Mechanics. 4th ed. O.U.P., 1958.